Valve



4 l m W0 v e m 2 s 3 2 2 a 7 LE 2 [I RV Ru my A a w E A n Aug. 5, 19,41.

Patented Aug. 5, 1941 UNITED STATES PATENT OFFICE 3 Claims.

This invention relates to an improvement in valves of the type described in Patent 2,190,255, issued to me February 13, 1940, and is designed with a View to simplifying the construction and operation of parts described in that patent, to efiect with greater certainty the maintenance of the open position of the valve and the pressure of the water on the movable gate to assist in holding the valve in closed position.

The primary object of the present invention is theprovision of a valve which, when in closed position, is. more or less directly responsive through the gate to the pressure of the water for holding it closed, which valve when moved to open position is held in that position by the pressure of the water on the gate.

The invention is illustrated in the accompanying drawings, in which- Figure 1 is a vertical section partly in elevation of a valve embodying the improvement.

Figure 2 is a section on line 2-2 of Figure 1.

The improved valve includes a casing I, formed with an inlet 2 to which, through the medium of a gland 3, is connected a service pipe i. The casing is formed in line with the inlet, with an outlet 5 to which, through the medium of a gland 6, is secured an outlet pipe I. The casing also includes a lateral opening 8 closed by a removable plug 9 through which the interior of the casing may be accessible.

The valve plate is pivotally secured at H on a shaft l2 mounted in a rounded offset of the casing beyond the direct line of the inlet and outlet, the shaft l2 being extended beyond the casing and provided with an operating rod 13 terminating in a weighted handle end I l.

The valve plate It is provided with a valve structure and the valve casing above the outlet 5 is formed with a valve seat It, the plane of which is at an inclination to the aligned inlet and outlet, such valve seat being inclined upwardly from the pivotal support of the valve.

A pressure gate I1 is pivotally supported at [8 in the upper portion of the valve casing in substantially vertical alignment with the pivotal support ll of the valve. The gate I! has a length and width somewhat less than the similar dimensions of the valve casing so that the gate may swing freely upwardly and downwardly when permitted to do so without interference.

When the valve is in closed position, as indicated in dotted. lines in Figure 1, the valve portion l5 closes the valve seat l6 and the gate I1 is positioned upwardly in the path of the water flowing through the inlet, the free end of the gate resting upon the projecting end of the valve plate I0. In this position the pressure of the water on the gate assists in holding the valve in a closed position, but it is to be particularly noted that the free end of the gate merely rests on the projecting end of the valve plate l0 and that the pressure effect of the gate is due to the angular inclination of the gate and valve when the latter is closed. In this position of the valve the weighted handle end I4 is in the lowered or dotted position.

When desired to open the valve the weighted handle end [4 is moved upwardly into the full line position, moving the valve across the opening 8. In this movement the projecting end of the valve plate 19 rides across the under surface of the gate until, when the valve is finally opened, the gate is pendant in front of the valve, open to the pressure of the flowing water and serves to hold the valve in open position.

It is noted that the upper end of the valve plate it is formed with a projection I9 serving to receive a bolt 20 for securing the valve parts to the plate, and that the bolt nut 2| is conveniently accessible for removing the plug 9 for tightening purposes.

The weighted handle I4 may be such as to overcome the closed position of the valve and, when free, move the valve to closed position. The gate, however, prevents this free movement of the valve, except under a material reduction in the volume of the water delivered through the valve casing, and in this event the valve will automatically move to a closed position, displacing the gate H, which latter is now under little or no pressure from the water.

What is claimed as new is:

l. A valve structure including a casing having a Vertically aligned inlet and outlet, a valve seat transverse the inlet and outlet and arranged on a plane at an inclination thereto, a valve mounted in the casing and movable from an open position out of line of direct fluid flow into contact with the valve seat, and a gate pivoted in vertical alignment with the valve and movable with the valve toward the valve seat to dispose the gate transverse the path of flow of fluid and at an inclination to the closed valve, the gate, when the valve is in open position, overlying the valve at one side of the path of fluid flow and subjected to the pressure of the fluid to hold the valve in open position.

2. A construction as defined in claim 1 wherein the valve casing is formed with an offset out of line with the inlet and outlet, with such ofiset pivotally receiving the valve and pivotally receiving the gate.

3. A construction as defined in claim 1 wherein the pivotal support of the valve is manually operated to move the valve, the manually controlled parts exerting the influence of gravity on the valve to move the valve from an open position to a closed position.

ANICETI'O CARRILLO. 

